diff options
Diffstat (limited to 'arch/sparc/mm/highmem.c')
| -rw-r--r-- | arch/sparc/mm/highmem.c | 25 |
1 files changed, 6 insertions, 19 deletions
diff --git a/arch/sparc/mm/highmem.c b/arch/sparc/mm/highmem.c index d4a80adea7e5..6ff6e2a9f9b3 100644 --- a/arch/sparc/mm/highmem.c +++ b/arch/sparc/mm/highmem.c @@ -32,8 +32,6 @@ #include <asm/pgalloc.h> #include <asm/vaddrs.h> -pgprot_t kmap_prot; - static pte_t *kmap_pte; void __init kmap_init(void) @@ -50,19 +48,13 @@ void __init kmap_init(void) /* cache the first kmap pte */ kmap_pte = pte_offset_kernel(dir, address); - kmap_prot = __pgprot(SRMMU_ET_PTE | SRMMU_PRIV | SRMMU_CACHE); } -void *kmap_atomic(struct page *page) +void *kmap_atomic_high_prot(struct page *page, pgprot_t prot) { unsigned long vaddr; long idx, type; - preempt_disable(); - pagefault_disable(); - if (!PageHighMem(page)) - return page_address(page); - type = kmap_atomic_idx_push(); idx = type + KM_TYPE_NR*smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); @@ -77,7 +69,7 @@ void *kmap_atomic(struct page *page) #ifdef CONFIG_DEBUG_HIGHMEM BUG_ON(!pte_none(*(kmap_pte-idx))); #endif - set_pte(kmap_pte-idx, mk_pte(page, kmap_prot)); + set_pte(kmap_pte-idx, mk_pte(page, prot)); /* XXX Fix - Anton */ #if 0 __flush_tlb_one(vaddr); @@ -87,18 +79,15 @@ void *kmap_atomic(struct page *page) return (void*) vaddr; } -EXPORT_SYMBOL(kmap_atomic); +EXPORT_SYMBOL(kmap_atomic_high_prot); -void __kunmap_atomic(void *kvaddr) +void kunmap_atomic_high(void *kvaddr) { unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK; int type; - if (vaddr < FIXADDR_START) { // FIXME - pagefault_enable(); - preempt_enable(); + if (vaddr < FIXADDR_START) return; - } type = kmap_atomic_idx(); @@ -131,7 +120,5 @@ void __kunmap_atomic(void *kvaddr) #endif kmap_atomic_idx_pop(); - pagefault_enable(); - preempt_enable(); } -EXPORT_SYMBOL(__kunmap_atomic); +EXPORT_SYMBOL(kunmap_atomic_high); |